Không rõ. (1995). Hướng dẫn nghiên cứu nguyên ký Maketing. Sunshine.
শিকাগো স্টাইলে সাইটেশনKhông rõ. Hướng Dẫn Nghiên Cứu Nguyên Ký Maketing. Sunshine, 1995.
এমএলএ সাইটেশনKhông rõ. Hướng Dẫn Nghiên Cứu Nguyên Ký Maketing. Sunshine, 1995.
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